baber/WOPTO huggingface dataset:
Patent GB-1487564-A (GB)
Title: Methods of making polyurethane powder
IPC: C08G18/08
Filed: 1974-09-18
Abstract: 1487564 Polyurethanes in finely divided form USM CORP 18 Sept 1974 [20 Sept 1973] 40759/74 Heading C3R Polyurethanes in finely divided form are prepared by reacting an organic polyisocyanate with an organic compound containing at least two active hydrogen-containing groups in an inert organic liquid reaction medium in which at least one of the reactants and the polyurethane product are insoluble and in the presence of a catalyst for the polyurethaneforming reaction, in which process the reactants are continuously fed to one or more mixing zones in which they are dispersed with vigorous agitation in the inert liquid, portions of the dispersion are continuously discharged therefrom to a further mixing zone wherein they reside for thickening by at least partial reaction of the reactants in the discharged portion to form a polyurethane, reaction of the reactants in the discharged portion is continued under conditions which retard settling of the dispersed material substantially to complete the reaction to form finely divided particles of the polyurethane and the polyurethane particles are separated from the inert liquid. The reaction is preferably carried out in a multi-zone mixer pulsator in which portions of the dispersion discharged from a first mixing zone are continuously introduced into a body of mixed components in at least one successive mixing zone and circulated for repeated agitation mixing, and portions of the dispersion in each successive zone are discharged continuously. A surfactant, which is preferably a vinyl pyrrolidone copolymer, may be employed to aid dispersion. In a typical Example, (1) an emulsion of a polytetramethylene ether glycol and 1,4 - butane diol in a liquid paraffinic hydrocarbon mixture is formed in the first zone of a mixer pulsator, portions of the emulsion are passed into a second zone into which 4,41- diphenylmethane diisocyanate is passed, the materials of the second zone are passed to a third zone where limited reaction takes place and material then passes to a fourth zone to form dispersed fine particles of polyurethane in a continuous phase of the liquid hydrocarbon. The particles may then be separated from the supernatant liquid.
Patent GB-1440377-A (GB)
Title: Flameproof enclosures for electrical devices
IPC: H02B1/28
Filed: 1973-08-30
Abstract: 1440377 Switch housings SIEMENS AG 30 Aug 1973 [31 Aug 1972] 40968/73 Heading H1N A flameproof housing has an earthed partition 30 which divides it into high and low voltage chambers and a further earthed partition 25 between the primary and secondary parts of current transformers 23, 24. The primary windings of the transformers are connected between vacuum switch terminals 2], 22 and bushings 16 in the side wall 14 of the housing. The low voltage chamber houses instruments 31.
Patent GB-889666-A (GB)
Title: Improvements in or relating to the manufacture of grid electrodes for electric discharge devices
Inventor: BUTCHER CYRIL HERBERT
IPC: H01J19/00
Filed: 1959-12-04
Abstract: 889,666. Making grid electrodes; winding; cutting by fusion. M.O. VALVE CO. Ltd. Nov. 25, 1960 [Dec. 4, 1959], No. 41273/59. Classes 83 (2) and 83 (4). A pair of grid electrodes is made by winding a length of wire 10 around two frames 3, securing the wire 10 to the frames 3, and severing the lengths 11 of the wire 10 between the edges of the frames 3 by applying a potential difference between the frames 3 to cause sufficient current flow to fuse the lengths 11. Molybdenum frames 3, goldcoated on their outer surfaces are separated by a molybdenum spacer 6 having a sintered alumina insulating coating. The assembly is rotated in a chuck while a length of wire 10 secured at one end by wrapping around a tag 7 on the spacer 6 is wound helically round the frames 3. After securing the free end by wrapping around a tag 8, the wire is brazed by heating to 1125‹ C. in a furnace. Subsequently a 15-20-volt supply is connected across the frames 3 to fuse the lengths 11. In a modification the frames 3 consist of spaced carrier wires.
Patent GB-877302-A (GB)
Title: Improvements in and relating to a sealing arrangement in a tilting or pivoting window
IPC: E06B3/40
Filed: 1958-12-22
Abstract: 877,302. Window sealing strips. RASMUSSEN, V. B. K., [trading as RASMUSSEN & CO., V. KANN]. Dec. 22, 1958 [Dec. 23, 1957], No. 41372/58. Class 20(3) In a tilting or pivoting window, e.g. an inclined skylight, comprising an abutment-rail divided into parts 141, 1411 at the region of the tilting axis 13 of the window and on opposite sides of said axis the abutment rail being secured to the sash 11 and frame 12 respectively, a sealing strip 171, 1711 of channel shape is inserted between the rail and sash and between the rail and frame so that in the closed position of the window the longitudinal edges of the sealing strip contact the frame 12 and the sash 11, Fig. 4, at least one sealing strip covering the abutment joint of the rail 141, 14<SP>11</SP> at the axis 13, e.g. by an overlap as shown in Fig. 6. The strip of Y-section, Fig. 4, may be placed so as to have a small tilting action with respect to the rail 141, 14<SP>11</SP> around an axis parallel thereto so as to have the same contact pressure against the frame of the sash. The strip may have a key portion 20, Fig. 7 received in a corresponding groove in the rail 14, the contacting portions 19 of the strip consisting of resilient material interconnected or supported by an elastic bar 191, e.g. of metal incorporated in the resilient material. The sealing strip 27, Fig. 8, secured to the rail 24 contacts the outer surface of the frame 22 and sash 21.
Patent GB-973474-A (GB)
Title: Improvements in or relating to fuel metering systems for internal combustion engines
IPC: F02M69/00
Filed: 1960-12-01
Abstract: 973,474. Spray carburetters. CONTINENTAL MOTORS CORPORATION. Dec. 1, 1960 [Dec. 28, 1959], No. 41398/60. Heading F1B. A fuel metering valve 40 is connected to a plunger 41 having a shoulder 47 responsive to the fuel pressure upstream of the metering orifice 39 and actuated by a capsule 45 responsive to inlet manifold pressure. The fuel is supplied by pump 14 to the metering valve inlet 15 and is delivered through pipe 18 to a distributer 17 connected through pipes 20 to individual injector nozzles 19. An idle stop 48 limits the travel of the pin 40.
Patent GB-1492884-A (GB)
Title: Vehicle mounted loading cranes
IPC: B66C23/62
Filed: 1975-10-10
Abstract: 1492884 Vehicle mounted loading cranes HIAB-FOCO AB 10 Oct 1975 [22 Oct 1974] 41540/75 Heading B8H A loading crane 1 mounted on a vehicle chassis frame 3 comprises a connection between the crane base B and a transverse stay 14, wherein a support arm 8 extending longitudinally of the frame 3 has a free end in the form of a hub 11 in which is inserted a rubber joint member 19 secured by compression member 20 and bolts 21 to the stay 14, the arm end hub 11 engaging with some clearance in a lateral groove 12 in the stay 14. When unloaded, or lightly loaded, e.g. during road transport when folded, metal to metal contact between the arm 8 and the stay 14 is prevented; but, when the crane 1 is used for loading the joint member 19 is compressed until the hub 11 comes into direct contact with the stay 14 at wall 23 or 24 of the groove 12.
Patent GB-1486794-A (GB)
Title: Ceramic electronic devices
IPC: H05K3/10
Filed: 1974-09-24
Abstract: 1486794 Capacitors; circuit assemblies NL INDUSTRIES Inc 24 Sept 1974 [24 Sept 1973] 41565/74 Headings H1M and H1R The invention forming the subject of 1,486,308 is modified in that in the spaces between adjacent ceramic layers pillars of ceramic or refractory metal are provided extending between the layers. The pillars may be formed by incorporating granules of appropriate size in the volatile composition which in the green body occupies the place of the eventual conductors, or such granules may be dispersed on a preformed film, or in a volatile granular composition. Alternatively holes may be left in the applied volatile layers which holes are filled with a composition, e.g. platinum or palladium paste which will form pillars on firing. Alternatively, the distortion of adjacent ceramic layers to fill the holes may be relied on.
Patent GB-900328-A (GB)
Title: Indicating push button type signal light assembly for electric switches
IPC: H01H13/02
Filed: 1960-12-05
Abstract: 900,328. Indicators for switches; handactuating devices for switches; switch cases. NORTHERN ORDNANCE Inc. Dec. 5, 1960 [Sept. 21, 1960], No. 41818/60. Class 38 (5). An indicating push-button for operating an assemby of micro-switches 44 comprises a longitudinally sectionized plunger 82 of lighttransmitting material, such as polymerized methyl methacrylate, slidable in a tubular housing 22 which is secured to a panel P by means of a lock-nut 106. A flexible transparent plastic cover 110 is moulded to the locknut 106, which also carries a gasket 112, thus rendering the assembly moisture - proof. Switches 44 are carried in a bracket 16 adjustably mounted on the end of housing 22 by means of a threaded ferrule 18 which guides an actuating button 36. When plunger 82 is depressed against spring 116 it presses button 36 which operates snap-acting plates 40, 42 to actuate the switches 44. Plunger 82 comprises two semi-cylindrical portions 86 and 88 cemented together with a light-reflecting opaque plate 90 therebetween and a translucent disc 94 at the top. An opaque reflective coating 102 is applied to the outside of the plunger 82. Each portion 86 and 88 has a slot 92 therein to accommodate the tips of respective lamps 62 mounted on housing 22, as shown. Lamps 62 may be used for separate indications or In parallel for filament failure display.
Patent GB-1106308-A (GB)
Title: Improvements in or relating to the drying of lumber
IPC: F26B21/00
Filed: 1966-09-20
Abstract: 1,106,308. Drying timber. IMRIE DRY KILN CO. 20 Sept., 1966 [4 Feb., 1966], No. 41941/66. Heading F4G. Timber is dried in a kiln by air from rows of fans 4 parallel to the side walls 10 of the kiln beneath which pairs of lumber piles 1, 2 are positioned in a tilted outwardly manner so as to form a tapered air space 5 between each pair of piles whereby the air flow from the fans is projected thereinto for flow outwardly through the piles. A portion of the air is bled off through roof vents 11 and the majority is recirculated, partially by passage A through the fans 4 and partially by induction B by the fan flow. Heaters 13 are positioned on the lower portions of the side walls to heat and reduce the moisture content of the recirculated air.
Patent GB-1208940-A (GB)
Title: Apparatus for dielectric heating
IPC: H05B6/78
Filed: 1968-09-04
Abstract: 1,208,940. Drying webs by microwaves. CANADIAN PATENTS & DEVELOPMENT Ltd. 4 Sept., 1968 [29 Sept., 1967],No. 42104/68. Heading F4G. [Also in Divisions H3-H5] The heating pattern across the width of a web travelling through a rectangular waveguide excited in the TE 01  mode is modified by providing at least one inwardly directed longitudinally extending, electrically conductive vane electrically connected to a side wall 41. Two vanes 40 may be soldered, welded or flexibly and adjustable secured to the opposite side walls to provide uniform heating. Drying, curing of adhesives, and setting of resins may be performed in the guide.
Patent GB-925108-A (GB)
Title: Improvements relating to the production of lubricating oils
Inventor: VOSSER JOHN LESLIE
Filed: 1960-12-08
Abstract: A finished petroleum lubricating oil, that is, an oil which has already been treated by one or more of the steps of solvent refining, acid treating, clay treating, and hydrofinishing, is further treated in a process comprising the steps of hydrocatalytic desulphurization and catalytic hydrogenation, either simultaneously or in succession, fractionation to remove lower boiling material and give a hydrogenated oil having an open flash point of not less than 400 DEG F, dewaxing, and recovering a product of improved thermal stability. The dewaxing, which may be effected before or after fractionation, is carried out in conventional manner, for example with methylisobutyl ketone or methylene chloride.  Treatment with silica gel to remove aromatics may also be introduced.  The desulphurization step may employ as catalyst one or more sulphuric resistant metals, or compounds, selected from Group VIa and VIII of the Periodic Table, for example cobalt oxide and molybdenum oxide supported on alumina. The preferred process conditions are:-Temperature 600-850 DEG F Pressure 100-1500 p.s.i.g. Space velocity 0,5-5 v/v/hr. Gas rate (regular or once through) 1000-10000 SCF H/B. The hydrogenation step may use catalysts of the same class as above, the preferred catalyst being tungsten-nickel sulphide. Alternatively nickel or kieselguhr, sepiolite, or alumina, may be employed.  The hydrogenation is preferably effected at pressures of at least 100 p.s.i.g., 200-800 DEG F., space velocity 0,1-5 v/v/hr, and gas rate of 1000-15000 SCFH/B.  An oxidation inhibitor, such as a blend of 5-ethyl-10, 10- diphenylphenaza-silane and phenyl alpha naphthylamine, each in an amount of up to 1% by weight, may be blended with the finished product.
Patent GB-906445-A (GB)
Title: Miniature variable resistance device
IPC: H01C10/32
Filed: 1959-12-14
Abstract: 906,445. Variable resistors. GLOBE-UNION Inc. Dec. 14, 1959 [Jan. 2, 1959], No. 42465/59. Class 37. A compact variable resistor comprises a base, with a resistance element in a groove, having flat terminals and a conductive shaft moulded integrally to it, with a movable assembly rotatable by a cover about the shaft causing a contact to move over the element. Shaft 2 and terminals 4, 5, 6, Figs. 2 and 3, are moulded into a base 1, terminal 4 having collar 34 in which the shaft 2 is staked. The inner ends 9 and 10 of terminals 5 and 6 underlie an annular groove 7, Fig. 5, in which the resistance element 8, comprising a phenolic strip with resistance paint on its upper surface is located. The ends of the element 8 are coated with silver paint and silver laden epoxy is used to cement it into the groove 7, thus providing good electrical contact with the terminals 5 and 6. The moving elements consist of a cover 22, a contact spring 16 and take-off spring 24 all secured to a headed bushing 11 rotatable about the shaft 2, opposed slots 12 on the bushing, Fig. 4, receiving tabs from each of the elements to prevent relative rotation. The cover 22 has a flange 31 riding on the inner face of the base to form a dust seal and a broad bearing prevents wobble of the moving elements with respect to the shaft. The contact spring 16 is circular in shape, having a C-shaped slot 17 dividing it into an outer ring 18 and inner disc 19. The disc 19 seats against the inner walls of the cover 22 and has a central opening which fits tightly on the bushing 11, and the ring 18 is biased out from the plane of the disc to give a spring-pressed sliding engagement between the nipple 21 and the resistance element 8. To give a satisfactory electrical contact between the contact spring 16 and the terminal 4, the shaft 2 is provided with an annular shoulder 3 against which the take-off spring 24 has a spring-biased sliding contact. The spring 24 has a C-shaped portion 25 and a circular portion 26 joined by a U-shaped bridge 28. The portion 26 rests flatly against the inner disc 19 and the C-shaped portion 25 is outwardly biased from 26 and has its ends provided with dimples 29. The cover 22 and spring assembly is rotatably held on the shaft 2 by a retaining ring 30, the walls of the cover being slightly deformed to maintain a sliding bearing between the edge of the flange 31 and base 1. The terminals 4, 5 and 6 are blanked out on a metal strip (Figs. 7 and 9, not shown) and are moulded to the base using a jig and die.
Patent GB-1197760-A (GB)
Title: 1-(Hydroxyalkly)-4-Substituted-Piperidines
Inventor: NAKANISHI MICHIO
IPC: C07D211/58
Filed: 1967-09-19
Abstract: 1,197,760. Piperidine derivatives. YOSHITOMI PHARMACEUTICAL INDUSTRIES Ltd. 19 Sept., 1967, No. 42596/67. Heading C2C. Novel piperidines of formula wherein A is -(CH 2 ) 2 -, -(CH 2 ) 3 -, -(CH 2 ) 2 O (CH 2 ) 2 -, -CH(CH 3 )CH 2 -, -CH(CH 2 OH) CH 2 -, -CH(CH 2 Cl)CH 2 - or -CH(C 6 H 5 ) CH 2 -; -N(R) 2  is pyrrolidino, piperidino, morpholino or 4-methyl-1-piperazinyl, and R 1 , R 2 , R 3  and R 4  are -H or -CH 3  are prepared by reacting the appropriate 4-substituted piperidine with an epoxy compound of Formula II wherein R 5  is -H, -CH 3 , -CH 2 OH, -CH 2 Cl or -C 6 H 5 , or with a halohydrin of formula HO-A<SP>1</SP>-Hal wherein Hal is a halo atom and A<SP>1</SP> is as A above with the exception of A = -(CH 2 ) 2 O(CH 2 ) 2 -.
Patent GB-1156454-A (GB)
Title: Aspheric Corneal Contact Lens Series
Inventor: VOLK DAVID
IPC: G02C7/04
Filed: 1966-09-26
Abstract: 1,156,454. Contact lenses. D. VOLK. Sept.26, 1966 [Oct. 4, 1965], No.42786/66. Heading G2J. A series of corneal contact lenses has the corneal surface of each lens formed as a continuous and regular aspherical surface of revolution of the conoid type which decreases in curvature from its apex to its peripheral edge, the lenses being arranged in a graded series of apical radii of curvature of values ranging from 6À50 mm to 8À50 mm in steps of 0À05 mm and having eccentricities of 0À4 to 1À6 in steps of 0À1 units for each apical radius of curvature and being of sufficient thickness to provide optically coacting front surfaces. The corneal surface may be a prolate ellipsoid, paraboloid or hyperboloid and the front surface an oblate ellipsoid, sphere, prolate ellipsoid, paraboloid or hyperboloid. Details are given in the Specification for evaluating the parameters of a lens of minimum thickness and thus minimum weight in which (1) the centre and edge thicknesses are substantially equal, these generally being negative power lenses and (2) the centre thickness exceeding the edge thickness, these generally being positive power lenses.
Patent GB-1294203-A (GB)
Title: Improvements in or relating to highly active silver catalysts
IPC: H01M4/90
Filed: 1970-09-07
Abstract: 1294203 Production of silver SIEMENS A G 7 Sept 1970 [19 Sept 1969] 42824/70 Heading C7D Catalytically active silver is produced by the reduction of a silver salt in the presence of a metal hydroxide on which the silver is deposited, the hydroxide then being dissolved out to leave not more than 5% w/ w thereof based on the deposited silver. The hydroxide may be dissolved in a base, such as NH 4 OH, NaOH or KOH. The silver salt may be AgNO 3 . The reducing agent may be hydrazine, formaldehyde or hydroxylamine. The hydroxide may be aluminium, cobalt, cadmium or nickel hydroxide.
Patent GB-1475530-A (GB)
Title: Fence dropper and method of production
IPC: E04H17/10
Filed: 1974-10-03
Abstract: 1475530 Fence droppers G F LEIBLICH 3 Oct 1974 42866/74 Heading E1B A fence dropper adapted to hold wires 21 in spaced relation comprises an elongate body portion 11 which is more rigid perpendicular to the plane of the wires 21 than parallel thereto and which has a plurality of tongues 12 spaced from one another along an edge of the portion 11. Each of the tongues is spaced from the body portion and extends forwardly away from the body portion across the plane of the wires 21 and has a return portion crossing back to be rearwardly of the plane so that a wire retaining recess is formed. The wires may be held by the droppers by means of tubular insulating rings and may be electrified. see Figs. 7-9 (not shown).
Patent GB-1008746-A (GB)
Title: Improved rotary piston internal combustion engines
Inventor: FELLER FRITZ
IPC: F02B53/08
Filed: 1963-11-27
Abstract: 1,008,746. Rotary-piston I.C. engines; motor power plant. ROLLS-ROYCE Ltd. Jan. 14, 1964 [Nov. 27, 1963], No. 42997/64. Divided out of 1,008,745. Headings F1F and F1Q. In a rotary-piston I.C. engine of the trochoidal n and n+1 lobe type air supplied through a passage or duct 25 (Fig. 1) to a cavity 14 containing a piston 10 is pre-compressed by a piston 11 driven by exhaust gases flowing from said cavity through a passage or duct 26 to a port 24, the air being received by piston 11 through a port 23. Passage 25 includes a non-return valve 42, and passage 26 contains a rotatable valve 46 which is driven by a shaft 13 for piston 11, chambers 43, 44 in said passages serving as reservoirs for the air and exhaust gases respectively. Piston 11 may be smaller than piston 10, as shown, and rotate at a correspondingly higher speed, a shaft 12 for piston 10 being coupled to shaft 13 by e.g. gearing (not shown), to rotate in the same direction. Radial sealing strips for piston 11 may be provided at its apices 11b and in cavity 15 at points 16, 17. Fuel injected into the compressed air by injectors 27, 28 may be ignited by spark plugs 31, 32. Alternatively, the engine may comprise a single piston 11 to pre-compress air for a plurality of pistons 10, or it may comprise a plurality of pairs of pistons 10, 11. The engine may be modified to include a single piston 10/ (Fig. 2) lodged in a cavity 14f which is supplied with precompressed air by a compressor 51 which is driven by a shaft 12f for said piston, the exhaust gases being discharged from said cavity through a turbine 52 coupled to shaft 12f. Rotatable valves 55, 56 are provided to connect either or both of passages 25h, 26h to the atmosphere. Turbine 52 may be replaced by a machine of different type which can be driven by exhaust gases.
Patent GB-1202216-A (GB)
Title: Improvements in or relating to propeller assemblies
Inventor: HAVETTE CLAUDE
IPC: B64C11/00
Filed: 1967-09-22
Abstract: 1,202,216. Propellers. NORD-AVIATION SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. 22 Sept., 1967 [26 Sept., 1966], No. 43347/67. Heading B7V. In a propeller assembly comprising a propeller 7, shroud 5 and diffuser 2, each propeller blade 4 is connected at its outer end to a propeller ring 8 or to a segment 9 of a segmented propeller ring and the ring or segmented ring is provided with vanes 6 which are situated between the ring or segmented ring and the shroud. In the embodiment of Figs. 8 and 9 (not shown), a cavity in the shroud houses the vanes.
Patent GB-1082535-A (GB)
Title: Improvements in manually controlled,motor-driven tampers
IPC: E02D3/068
Filed: 1964-10-26
Abstract: 1,082,535. Tampers. H. WACKER and P. WACKER. Oct. 26, 1964 [Nov. 15, 1963], No. 43480/64. Heading E1G. The motor 1, of a tamper is mounted on a pad 2 formed on an internal cylinder 4 containing gearing 3 and a connecting rod 16 coupled to a guide-cylinder 5 having guide bushes 6 slidable on pillars 7 extending from the tamping foot 8, the guide cylinder being supported on springs 9, 10 on each side of the bushes 6. Relative rotation of the cylinders is prevented by guide pins 18.
Patent GB-1444632-A (GB)
Title: Process for the regeneration of a clause catalyst
IPC: B01J37/20
Filed: 1973-09-17
Abstract: 1444632 Claus catalyst regeneration SHELL INTERNATIONAL RESEARCH MAATSCHAPPIJ BV 17 Sept 1973 43531/73 Heading B1E [Also in Division C1] A catalyst, e.g. activated alumina or bauxite, which has become regenerated during the Claus reaction for the production of sulphur by contact of hydrogen sulphide/sulphur dioxide gas mixture of molar ratio of substantially 2:1 with the catalyst a maximum catalyst temperature at not higher than 335C but above the dew point of sulphur, is regenerated by contact with a gas mixture of the same constitution at a minimum catalyst temperature of 340C. The Claus reaction may be effected in a plurality, e.g. three, cataylst-containing reactors arranged in series with regeneration of each reactor being effected in turn.
Patent GB-873012-A (GB)
Title: Cast bimetallic articles
IPC: B22D19/00
Filed: 1959-12-24
Abstract: 873,012. Casting composite articles. ALUMINUM CO. OF AMERICA. Dec. 24, 1959 [Jan. 2, 1959], No. 43859/59. Class 83 (1). A bimetallic article such as a brake drum, Fig. 2, or an engine cylinder, is made by casting light metal on to a ferrous or cuprous metal insert having an as - cast roughened surface. The insert is preferably made by centrifugal casting in a mould lined with an aerated wash as described in U.S.A. Specification 2,623,809, which is referred to.